I have been fascinated with the possibility of life on other planets around distant stars in our galaxy. NASA has been investigating the possibility for some time now, as I have posted a few times. A few years ago NASA's Spitzer Telescope found seven Earth-sized planets orbiting a red dwarf star (Trappist), about 40 light years away from us. Three of the seven reside within what is called the "Goldilocks Zone," where there may well be liquid water, which is essential to life as we know it.
The first NASA photo below shows an artist's rendition of what these severn planets may look like. The second photo shows another artist's suggestion of what it might look like from the surface of one of those planets. Notice the other planets in the sky.
Click to enlarge.
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